/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | foam-extend: Open Source CFD
   \\    /   O peration     | Version:     4.1
    \\  /    A nd           | Web:         http://www.foam-extend.org
     \\/     M anipulation  | For copyright notice see file Copyright
-------------------------------------------------------------------------------
License
	This file is part of foam-extend.

	foam-extend is free software: you can redistribute it and/or modify it
	under the terms of the GNU General Public License as published by the
	Free Software Foundation, either version 3 of the License, or (at your
	option) any later version.

	foam-extend is distributed in the hope that it will be useful, but
	WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
	General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with foam-extend.  If not, see <http://www.gnu.org/licenses/>.

\*---------------------------------------------------------------------------*/

#include "foamString.H"
#include "stringOps.H"


/* * * * * * * * * * * * * * * Static Member Data  * * * * * * * * * * * * * */

const char* const Foam::string::typeName = "string";
int Foam::string::debug(debug::debugSwitchFromDict(string::typeName, 0));
const Foam::string Foam::string::null;


// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //

Foam::string::size_type Foam::string::count(const char c) const
{
	size_type cCount = 0;

	for (const_iterator iter = begin(); iter != end(); ++iter)
	{
		if (*iter == c)
		{
			cCount++;
		}
	}

	return cCount;
}


Foam::string& Foam::string::replace
(
	const string& oldStr,
	const string& newStr,
	size_type start
)
{
	size_type newStart = start;

	if ((newStart = find(oldStr, newStart)) != npos)
	{
		std::string::replace(newStart, oldStr.size(), newStr);
	}

	return *this;
}


Foam::string& Foam::string::replaceAll
(
	const string& oldStr,
	const string& newStr,
	size_type start
)
{
	if (oldStr.size())
	{
		size_type newStart = start;

		while ((newStart = find(oldStr, newStart)) != npos)
		{
			std::string::replace(newStart, oldStr.size(), newStr);
			newStart += newStr.size();
		}
	}

	return *this;
}


Foam::string& Foam::string::expand(const bool allowEmpty)
{
	stringOps::inplaceExpand(*this, allowEmpty);
	return *this;
}


bool Foam::string::removeRepeated(const char character)
{
	bool changed = false;

	if (character && find(character) != npos)
	{
		string::size_type nChar=0;
		iterator iter2 = begin();

		char prev = 0;

		for
		(
			string::const_iterator iter1 = iter2;
			iter1 != end();
			iter1++
		)
		{
			char c = *iter1;

			if (prev == c && c == character)
			{
				changed = true;
			}
			else
			{
				*iter2 = prev = c;
				++iter2;
				++nChar;
			}
		}
		resize(nChar);
	}

	return changed;
}


Foam::string Foam::string::removeRepeated(const char character) const
{
	string str(*this);
	str.removeRepeated(character);
	return str;
}


bool Foam::string::removeTrailing(const char character)
{
	bool changed = false;

	string::size_type nChar = size();
	if (character && nChar > 1 && operator[](nChar-1) == character)
	{
		resize(nChar-1);
		changed = true;
	}

	return changed;
}


Foam::string Foam::string::removeTrailing(const char character) const
{
	string str(*this);
	str.removeTrailing(character);
	return str;
}


// ************************************************************************* //
